3 mL (1.5 mL min.) Amniotic fluid in a sterile screw capped vial. Avoid blood contamination. Ship refrigerated or frozen. Indicate gestational age, collection date, clinical indications and the AFP and MoM results if available on the Test Request Form. Sample should be drawn between 13-24 weeks gestation. Samples shall be accepted only from registered genetics clinics under PCPNDT Act.